JP7253685B2 - Connection structure between valve cover and valve shaft - Google Patents

Connection structure between valve cover and valve shaft Download PDF

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JP7253685B2
JP7253685B2 JP2018205611A JP2018205611A JP7253685B2 JP 7253685 B2 JP7253685 B2 JP 7253685B2 JP 2018205611 A JP2018205611 A JP 2018205611A JP 2018205611 A JP2018205611 A JP 2018205611A JP 7253685 B2 JP7253685 B2 JP 7253685B2
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valve shaft
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慶太 奥澤
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丸一株式会社
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本発明は、螺合を用いた弁蓋と弁軸の接続構造に関するものである。 TECHNICAL FIELD The present invention relates to a structure for connecting a valve cap and a valve shaft using screwing.

洗面ボウルやシンク、浴槽等の使用により排水が生じる設備には、当該使用により生じた排水を下流側へと排水するための配管部材が備えられている。 Facilities that generate wastewater through use, such as washbowls, sinks, and bathtubs, are equipped with piping members for discharging wastewater generated by the use to the downstream side.

ここで、上記配管部材の接続を螺合によって行う場合、適正な位置まで螺合を進めないと漏水等の恐れが生じる。即ち、螺合が弱いと水密な接続を行うことが不可能となり、逆に螺合が強すぎると部材に割れが生じる。又、螺合に緩みが生じた場合にも同様に、漏水等の恐れが生じる。 Here, when the piping members are connected by screwing, water leakage or the like may occur unless the screwing is advanced to an appropriate position. That is, if the screwing is weak, watertight connection cannot be achieved, and conversely, if the screwing is too strong, cracks will occur in the members. Also, if the screwing is loosened, there is also a risk of water leakage or the like.

上記問題に対し、特許文献１に記載の接続構造においては、螺合の軸方向に係合部及び被係合部を設けている。当該係合部と被係合部は螺合完了時に係合し、緩み止めを行うとともに、係合時の触感によって作業者に螺合完了を判別させることが可能となる。 In order to address the above problem, the connection structure described in Patent Document 1 provides an engaging portion and an engaged portion in the axial direction of screwing. The engaging portion and the engaged portion are engaged with each other at the time of completion of screwing to prevent loosening, and the tactile sensation at the time of engagement allows the worker to determine the completion of screwing.

しかし、上記特許文献１に記載の接続構造は外部に係合部や被係合部が露出していることから意匠性が悪く、又、外部からの圧力によって係合が解除される恐れがあった。 However, the connection structure described in Patent Document 1 has poor designability because the engaging portion and the engaged portion are exposed to the outside, and there is a possibility that the engagement may be released due to pressure from the outside. rice field.

特開２０１４－２３４５９１号公報JP 2014-234591 A

本発明は上記問題に鑑み、螺合を用いた弁蓋と弁軸の接続構造について、適正位置まで螺合が完了したことが容易に判別可能な接続構造を提供すること、及び当該接続構造について意匠性の向上、外部からの圧力によって緩みが生じない接続構造を提供することを目的とする。
In view of the above problems, the present invention provides a connection structure for connecting a valve cover and a valve shaft using screwing, which enables easy determination of completion of screwing to an appropriate position, and the connection structure. An object of the present invention is to provide a connection structure that improves designability and prevents loosening due to pressure from the outside.

上記課題を解決するための請求項１に記載の本発明は、螺合による弁蓋と弁軸の接続構造であって、
排水口を閉塞する弁蓋に形成される一方の雄螺子部又は雌螺子部と、
前記弁蓋を支持するとともに前記排水口から取り外し可能な弁軸に形成される前記雄螺子部又は前記雌螺子部が螺合する他方の雄螺子部又は雌螺子部と、
前記雄螺子部又は前記雌螺子部のどちらか一方の側面より他方の側面に向けて突設された係合部を備え、
前記係合部は、前記雄螺子部又は前記雌螺子部の他方に形成された被係合部と係合するとともに、
中央に前記弁軸が挿通可能な開口が形成された部材を前記弁軸に備えることを特徴とする弁蓋と弁軸の接続構造である。
The present invention according to claim 1 for solving the above problems is a connection structure between a valve cover and a valve shaft by screwing,
one of the male screw portions or the female screw portion formed on the valve cover that closes the drain port;
the other male threaded portion or female threaded portion to which the male threaded portion or the female threaded portion formed on the valve shaft that supports the valve cover and is removable from the drain port is screwed;
An engaging portion projecting from one side surface of the male screw portion or the female screw portion toward the other side surface,
The engaging portion engages with an engaged portion formed on the other of the male screw portion and the female screw portion ,
The connection structure between the valve cover and the valve shaft is characterized in that the valve shaft is provided with a member having an opening formed in the center through which the valve shaft can be inserted .

請求項２に記載の本発明は、前記係合部と前記被係合部は、
適正位置まで螺合が完了した際に係合することを特徴とする請求項１に記載の弁蓋と弁軸の接続構造である。
In the present invention according to claim 2, the engaging portion and the engaged portion are:
2. The connecting structure of the valve cover and the valve stem according to claim 1 , wherein the valve cover and the valve stem are engaged when screwing is completed to an appropriate position.

請求項３に記載の本発明は、前記被係合部は、
前記係合部と係合する溝部であることを特徴とする請求項１又は請求項２に記載の弁蓋と弁軸の接続構造である。
In the present invention according to claim 3, the engaged portion includes:
3. A connection structure between a valve lid and a valve shaft according to claim 1, wherein the groove is engaged with the engaging portion.

請求項４に記載の本発明は、前記係合部は、
前記雄螺子部又は前記雌螺子部の螺合終了側に形成されていることを特徴とする請求項１乃至請求項３のいずれか１つに記載の弁蓋と弁軸の接続構造である。
In the present invention according to claim 4, the engaging portion is
4. The connection structure between the valve cover and the valve shaft according to claim 1, wherein the connection structure is formed on the screwing end side of the male screw portion or the female screw portion.

本発明によれば、螺合を用いた弁蓋と弁軸の接続構造について、適正な位置まで螺合が完了したことが容易に判別可能となる。又、当該接続構造について意匠性の向上、及び外部からの圧力に対する抗力の向上を図ることが可能となる。
Advantageous Effects of Invention According to the present invention, it is possible to easily determine whether screwing has been completed to an appropriate position in a connection structure between a valve cover and a valve shaft using screwing. In addition, it is possible to improve the designability of the connection structure and improve the resistance to pressure from the outside.

本発明の施工状態を示す断面図である。It is sectional drawing which shows the construction state of this invention. 弁軸端部を示す斜視図である。It is a perspective view showing a valve stem end. 弁軸と弁蓋を示す断面図である。FIG. 4 is a cross-sectional view showing a valve stem and a valve lid; 弁軸と弁蓋の接続時における係合部の位置を示す参考図である。FIG. 10 is a reference diagram showing the position of the engaging portion when the valve shaft and the valve cover are connected; 弁軸と弁蓋の接続過程を示す断面図である。FIG. 4 is a cross-sectional view showing the process of connecting the valve stem and the valve cover; 接続完了状態を示す断面斜視図である。It is a cross-sectional perspective view which shows a connection completion state. 本発明の施工状態を示す断面図である。It is sectional drawing which shows the construction state of this invention. 弁軸端部を示す斜視図である。It is a perspective view showing a valve stem end. 弁軸と弁蓋を示す断面図である。FIG. 4 is a cross-sectional view showing a valve stem and a valve lid; 弁軸と弁蓋の接続時における係合部の位置を示す参考図である。FIG. 10 is a reference diagram showing the position of the engaging portion when the valve shaft and the valve cover are connected; 弁軸と弁蓋の接続過程を示す断面図である。FIG. 4 is a cross-sectional view showing the process of connecting the valve stem and the valve cover; 接続完了状態を示す断面斜視図である。It is a cross-sectional perspective view which shows a connection completion state. その他の実施形態を示す断面図である。It is a sectional view showing other embodiments.

以下、図面を参照しながら本発明の弁蓋と弁軸の接続構造を説明する。尚、以下に記載する説明は実施形態の理解を容易にするためのものであり、これによって発明が制限して理解されるものではない。
Hereinafter, the connecting structure of the valve lid and the valve shaft of the present invention will be described with reference to the drawings. The description given below is for facilitating the understanding of the embodiments, and is not intended to limit the understanding of the invention.

図１に示すように、本発明は洗面台の槽体Ｂに取り付けられる弁体３における、弁軸４と弁蓋５の接続構造に関するものである。 As shown in FIG. 1, the present invention relates to a connection structure between a valve shaft 4 and a valve lid 5 in a valve body 3 attached to a basin body B of a washbasin.

槽体Ｂは上方が開放された箱状であって、その底面に開口が形成されている。当該開口には内部に排水口１を形成する筒状の排水栓２が配置されており、槽体Ｂ内部の湯水を下水側へと排出する。 The tank body B has a box shape with an open top, and an opening is formed in the bottom surface thereof. A cylindrical drain plug 2 forming a drain port 1 is arranged in the opening, and the hot water inside the tank body B is discharged to the sewer side.

弁体３は槽体Ｂの排水口１を開閉する弁部材であって、弁軸４、弁蓋５、目皿１０から構成され、弁軸４と雌螺子部１２はそれぞれ雄螺子部１１と雌螺子部１２を有し、螺合により接続される。尚、螺合が進むにつれて弁軸４は弁蓋５の上端に向けて摺動することから、本実施形態おいて、雄螺子部１１は上端側が螺合開始側且つ下端側が螺合終了側であり、雌螺子部１２は下端側が螺合開始側且つ上端側が螺合終了側である。 The valve body 3 is a valve member that opens and closes the drain port 1 of the tank body B, and is composed of a valve shaft 4, a valve lid 5, and a perforated plate 10. The valve shaft 4 and the female screw portion 12 are connected to the male screw portion 11 and It has a female screw portion 12 and is connected by screwing. Since the valve shaft 4 slides toward the upper end of the valve lid 5 as the screwing progresses, the male screw portion 11 in this embodiment has the screwing start side at the upper end and the screwing end side at the lower end. The female screw portion 12 has a screwing start side on the lower end side and a screwing end side on the upper end side.

弁軸４は弁蓋５に形成された雌螺子部１２と螺合する雄螺子部１１を上端に有する棒状体であり、目皿１０が挿通されている。
上記雄螺子部１１には弁蓋５が螺合されているとともに、図２に示すように、下端に係合部１３である突起１４と、位置決め部１５が突設されている。
突起１４は雄螺子部１１の中程側面より雌螺子部１２の側面に向けて突出されている。
位置決め部１５は雄螺子部１１下端において、側面より雌螺子部１２の側面に向けて突出されており、その突出量は上記突起１４よりも大きい。 The valve shaft 4 is a rod-shaped body having a male threaded portion 11 at its upper end which is screwed with a female threaded portion 12 formed on the valve lid 5, and a perforated plate 10 is inserted therethrough.
A valve cover 5 is screwed onto the male screw portion 11, and as shown in FIG.
The protrusion 14 protrudes from the middle side surface of the male screw portion 11 toward the side surface of the female screw portion 12 .
The positioning portion 15 protrudes from the side surface toward the side surface of the female screw portion 12 at the lower end of the male screw portion 11 , and the amount of projection thereof is larger than that of the protrusion 14 .

図３に示すように、弁蓋５は排水口１を閉塞する平面視円形の蓋部材であって、本体部６と被覆部８から構成されている。
本体部６は周囲にパッキン９が嵌着されているとともに、その中央に弁軸４が取り付けられるための筒状部７が形成されている。
筒状部７は平面視略Ｃ字状であって、内部に雌螺子部１２が形成されているとともに、上端から下方に向けて被係合部１６である切り欠き状の溝部１７が形成されており、外周方向に応力が加わった際、拡径するように撓むことが可能となっている。尚、溝部１７の幅は上記突起１４の幅よりやや大きい程度となっている。
雌螺子部１２は溝部１７を始点及び終点として略１周程度形成されており、上記雄螺子部１１と対応するピッチ及び突出量を有する。
被覆部８は本体部６の上面を覆い隠す意匠面であり、ステンレス材によるカシメ加工によって本体部６に取り付けられている。 As shown in FIG. 3, the valve lid 5 is a circular lid member that closes the drain port 1 and is composed of a body portion 6 and a covering portion 8 .
A packing 9 is fitted around the body portion 6, and a cylindrical portion 7 is formed in the center thereof for mounting the valve stem 4 thereon.
The tubular portion 7 is substantially C-shaped in plan view, and has a female screw portion 12 formed therein and a notch-shaped groove portion 17 as an engaged portion 16 extending downward from the upper end thereof. When stress is applied in the outer peripheral direction, it is possible to bend so as to expand the diameter. The width of the groove portion 17 is slightly larger than the width of the projection 14 .
The female threaded portion 12 is formed approximately one turn with the groove portion 17 as a starting point and an end point, and has a pitch and a protrusion amount corresponding to those of the male threaded portion 11 .
The covering portion 8 is a designed surface that covers the upper surface of the main body portion 6, and is attached to the main body portion 6 by caulking with a stainless steel material.

目皿１０は上下方向に複数の開口が形成された網状であり、槽体Ｂから排出される湯水中のゴミ等を捕集する。又、目皿１０はその中央に弁軸４が挿通される開口が形成されている。尚、本実施形態において、目皿１０は弁軸４の上方と下方の２箇所に配置され、上方に配置された目皿１０は主に排水口１から排出される湯水中のゴミ等を捕集し、下方に配置された目皿１０は主にオーバーフロー流路から排出される湯水中のゴミ等を捕集する。 The perforated plate 10 has a mesh shape with a plurality of openings formed in the vertical direction, and collects dust and the like in hot water discharged from the tank body B. Also, the perforated plate 10 has an opening formed in its center through which the valve shaft 4 is inserted. In this embodiment, the perforated plate 10 is arranged at two locations above and below the valve stem 4, and the perforated plate 10 arranged above mainly catches dust and the like in hot water discharged from the drain port 1. The perforated plate 10 disposed below mainly collects dust and the like in hot water discharged from the overflow passage.

上記弁体３の組み立ての際には、弁軸４を目皿１０に挿通した状態で、係合部１３と被係合部１６が係合する位置まで雄螺子部１１と雌螺子部１２を螺合させることによって弁軸４と弁蓋５が接続される。
上記螺合について詳述すると、図４や図５（ａ）に示すように、係合部１３が雌螺子部１２に当接していない位置Ｐ１にある時、作業者は軽い力で螺合を進めることが可能となる。一方、上記係合部１３と雌螺子部１２の螺合開始側端部が当接する位置Ｐ２まで螺合が進められると、係合部１３によって雌螺子部１２が外側に向けて押圧される。この時、雌螺子部１２は被係合部１６として切り欠き状の溝部１７が形成されていることから、雌螺子部１２が拡径するように外側に撓む。これにより、係合部１３が雌螺子部１２を押し広げつつ螺合が進み、係合部１３が被係合部１６と係合する位置Ｐ３に移行することで、図５（ｂ）及び図６に示す接続完了状態となる。
上記接続完了時において係合部１３と被係合部１６が係合した際、拡径されていた雌螺子部１２は係合部１３による押圧が消失することにより、自身の弾性によって縮径し、元の形状に復帰する。この時、作業者は螺合に必要な応力が低減され、触感により適正位置まで螺合が完了したことを判別することができる。又、上記係合の際には係合に伴う音が生じることから、作業者は聴覚によっても螺合の完了を判別することができる。
又、接続完了時には位置決め部１５が雌螺子部１２の螺合開始側端部に当接し、それ以上螺合を進めることが不可能となる。 When assembling the valve body 3, the male threaded portion 11 and the female threaded portion 12 are threaded to the position where the engaging portion 13 and the engaged portion 16 engage with each other while the valve shaft 4 is inserted through the perforated plate 10. The valve shaft 4 and the valve cover 5 are connected by screwing them together.
4 and 5(a), when the engaging portion 13 is at the position P1 where it is not in contact with the female screw portion 12, the operator can screw the screw with a light force. It is possible to proceed. On the other hand, when the screwing is advanced to the position P2 where the engaging portion 13 and the female screw portion 12 are in contact with each other, the female screw portion 12 is pushed outward by the engaging portion 13 . At this time, since the female screw portion 12 is formed with the notch-shaped groove portion 17 as the engaged portion 16, the female screw portion 12 is bent outward so as to expand its diameter. As a result, the engaging portion 13 spreads the female screw portion 12 while the screwing progresses, and the engaging portion 13 shifts to a position P3 where it engages with the engaged portion 16, so that FIG. The connection completion state shown in 6 is reached.
When the engaging portion 13 and the engaged portion 16 are engaged with each other at the completion of the connection, the diameter of the female screw portion 12, which has been enlarged, is reduced by its own elasticity due to the disappearance of the pressure applied by the engaging portion 13. , reverts to its original shape. At this time, the stress required for screwing is reduced, and the operator can determine by touch that the screwing has been completed to the proper position. In addition, since a sound accompanying the engagement is generated during the engagement, the operator can also determine the completion of screwing by hearing.
Further, when the connection is completed, the positioning portion 15 comes into contact with the end portion of the female screw portion 12 on the screwing start side, and further screwing cannot be carried out.

上記弁軸４と弁蓋５の接続を解除する際には、接続時と逆方向に弁軸４と弁蓋５を回転させる。この時、係合部１３が被係合部１６を再び押圧することによって雌螺子部１２を外側に撓ませ、係合部１３と被係合部１６の係合が解除される。その後は解除方向に弁軸４又は弁蓋５を回転させるだけで弁軸４と弁蓋５を分離させることが可能となる。 When disconnecting the valve shaft 4 and the valve lid 5, the valve shaft 4 and the valve lid 5 are rotated in the direction opposite to the connection direction. At this time, the engaging portion 13 presses the engaged portion 16 again to bend the female screw portion 12 outward, and the engagement between the engaging portion 13 and the engaged portion 16 is released. After that, the valve stem 4 and the valve lid 5 can be separated simply by rotating the valve stem 4 or the valve lid 5 in the release direction.

次に、第二実施形態に係る弁蓋と弁軸の接続構造について説明する。尚、第二実施形態に係る配管部材は上記第一実施形態と同様に弁体３に関するものであり、図７に示すように、槽体Ｂに関する記載は第一実施形態と同一のため省略する。
Next, a connection structure between the valve lid and the valve shaft according to the second embodiment will be described. The piping member according to the second embodiment relates to the valve body 3 as in the first embodiment, and as shown in FIG. 7, the description of the tank body B is omitted because it is the same as that of the first embodiment. .

弁体３は槽体Ｂの排水口１を開閉する弁部材であって、弁軸４、弁蓋５、目皿１０から構成され、弁軸４と雌螺子部１２はそれぞれ雄螺子部１１と雌螺子部１２を有し、螺合により接続される。尚、螺合が進むにつれて弁軸４は弁蓋５の上端に向けて摺動することから、本実施形態おいて、雄螺子部１１は上端側が螺合開始側且つ下端側が螺合終了側であり、雌螺子部１２は下端側が螺合開始側且つ上端側が螺合終了側である。 The valve body 3 is a valve member that opens and closes the drain port 1 of the tank body B, and is composed of a valve shaft 4, a valve lid 5, and a perforated plate 10. The valve shaft 4 and the female screw portion 12 are connected to the male screw portion 11 and It has a female screw portion 12 and is connected by screwing. Since the valve shaft 4 slides toward the upper end of the valve cover 5 as the screwing progresses, the male screw portion 11 in this embodiment has the screwing start side on the upper end side and the screwing end side on the lower end side. The female screw portion 12 has a screwing start side on the lower end side and a screwing end side on the upper end side.

弁軸４は弁蓋５に形成された雌螺子部１２と螺合する雄螺子部１１を上端に有する棒状体であり、目皿１０が挿通されている。
上記雄螺子部１１は図８に示すように、その内部が中空である平面視略Ｃ字状であるとともに、上端から下方に向けて被係合部１６として切り欠き状の溝部１７が形成されており、中心方向に応力が加わった際に撓むことで縮径することが可能となっている。尚、溝部１７の幅は突起１４の幅よりやや大きい程度となっている。 The valve shaft 4 is a rod-shaped body having a male threaded portion 11 at its upper end which is screwed with a female threaded portion 12 formed on the valve lid 5, and a perforated plate 10 is inserted therethrough.
As shown in FIG. 8, the male screw portion 11 has a substantially C-shaped hollow interior and a notch-like groove portion 17 as an engaged portion 16 extending downward from the upper end. It is possible to reduce the diameter by bending when stress is applied in the central direction. The width of the groove portion 17 is slightly larger than the width of the projection 14 .

弁蓋５は排水口１を閉塞する平面視円形の蓋部材であって、本体部６と被覆部８から構成されている。
本体部６は周囲にパッキン９が嵌着されているとともに、その中央に弁軸４が取り付けられるための筒状部７が形成されている。
筒状部７は内部に上記雄螺子部１１と対応するピッチ及び突出量を有する雌螺子部１２が形成されているとともに、雌螺子部１２の螺合終了側である上端に、係合部１３である突起１４が突設されている。
突起１４は雌螺子部１２よりも螺合終了側に形成され、雄螺子部１１の側面に向けて突出している。
被覆部８は本体部６の上面を覆い隠す意匠面であり、ステンレス材によるカシメ加工によって本体部６に取り付けられている。 The valve lid 5 is a circular lid member that closes the drain port 1 and is composed of a body portion 6 and a covering portion 8 .
A packing 9 is fitted around the body portion 6, and a cylindrical portion 7 is formed in the center thereof for mounting the valve stem 4 thereon.
The cylindrical portion 7 has a female screw portion 12 formed therein having a pitch and a protrusion amount corresponding to those of the male screw portion 11, and an engaging portion 13 at the upper end of the female screw portion 12, which is the screwing end side. A projection 14 is provided.
The projection 14 is formed closer to the end of screwing than the female screw portion 12 and protrudes toward the side surface of the male screw portion 11 .
The covering portion 8 is a designed surface that covers the upper surface of the main body portion 6, and is attached to the main body portion 6 by caulking with a stainless steel material.

目皿１０は上下方向に複数の開口が形成された網状であり、槽体Ｂから排出される湯水中のゴミ等を捕集する。又、目皿１０はその中央に弁軸４が挿通される開口が形成されている。尚、本実施形態において、目皿１０は弁軸４の上方と下方の２箇所に配置され、上方に配置された目皿１０は主に排水口１から排出される湯水中のゴミ等を捕集し、下方に配置された目皿１０は主にオーバーフロー流路から排出される湯水中のゴミ等を捕集する。 The perforated plate 10 has a mesh shape with a plurality of openings formed in the vertical direction, and collects dust and the like in hot water discharged from the tank body B. Also, the perforated plate 10 has an opening formed in its center through which the valve shaft 4 is inserted. In this embodiment, the perforated plate 10 is arranged at two locations above and below the valve stem 4, and the perforated plate 10 arranged above mainly catches dust and the like in hot water discharged from the drain port 1. The perforated plate 10 disposed below mainly collects dust and the like in hot water discharged from the overflow passage.

上記弁体３の組み立ての際には、弁軸４を目皿１０に挿通した状態で、係合部１３と被係合部１６が係合する位置まで雄螺子部１１と雌螺子部１２を螺合させることによって弁軸４と弁蓋５が接続される。
上記螺合について詳述すると、図１０や図１１（ａ）に示すように、係合部１３が雄螺子部１１と当接していない位置Ｐ１にある時、作業者は軽い力で螺合を進めることが可能である。一方、上記係合部１３と雄螺子部１１の螺合開始側端部が当接する位置Ｐ２にまで螺合が進められると、係合部１３によって雄螺子部１１が内側に向けて押圧される。この時、雄螺子部１１はその内部が中空であるとともに、切り欠き状の溝部１７が形成されていることから、当該押圧によって雄螺子部１１が縮径するように内側に撓む。これにより、係合部１３が雄螺子部１１を縮径させつつ螺合が進み、係合部１３が被係合部１６と係合する位置Ｐ３移行することで、図１１（ｂ）及び図１２に示す接続完了状態となる。
上記接続完了時において係合部１３と被係合部１６が係合した際、縮径されていた雄螺子部１１は係合部１３による押圧が消失することにより、自身の弾性によって拡径し、元の形状に復帰する。この時、作業者は螺合に必要な応力が低減され、触感により適正位置まで螺合が完了したことを判別することができる。又、上記係合の際には係合に伴う音が生じることから、作業者は聴覚によっても螺合の完了を判別することができる。 When assembling the valve body 3, the male threaded portion 11 and the female threaded portion 12 are threaded to the position where the engaging portion 13 and the engaged portion 16 engage with each other while the valve shaft 4 is inserted through the perforated plate 10. The valve shaft 4 and the valve cover 5 are connected by screwing them together.
10 and 11(a), when the engaging portion 13 is at the position P1 where it is not in contact with the male screw portion 11, the operator can screw it with a light force. It is possible to proceed. On the other hand, when the screwing is advanced to the position P2 where the engaging portion 13 and the screwing start side end portion of the male thread portion 11 abut, the male thread portion 11 is pressed inward by the engaging portion 13. . At this time, since the inside of the male threaded portion 11 is hollow and the cutout-shaped groove portion 17 is formed, the male threaded portion 11 bends inward so as to reduce its diameter due to the pressure. As a result, the engaging portion 13 advances the screwing while reducing the diameter of the male screw portion 11, and the engaging portion 13 shifts to the engaged portion 16 to engage with the engaged portion 16, thereby moving to the position P3 shown in FIGS. The connection completion state shown in 12 is reached.
When the engaging portion 13 and the engaged portion 16 are engaged with each other when the connection is completed, the male screw portion 11, which has been reduced in diameter, loses the pressure applied by the engaging portion 13 and expands in diameter due to its own elasticity. , reverts to its original shape. At this time, the stress required for screwing is reduced, and the operator can determine by touch that the screwing has been completed to the proper position. In addition, since a sound accompanying the engagement is generated during the engagement, the operator can also determine the completion of screwing by hearing.

上記弁軸４と弁蓋５の接続を解除する際には、接続時と逆方向に弁軸４と弁蓋５を回転させる。この時、係合部１３が被係合部１６を再び押圧することによって雄螺子部１１を内側に撓ませ、係合部１３と被係合部１６の係合が解除される。その後は解除方向に螺合を進めるだけで弁軸４と弁蓋５を分離させることが可能となる。 When disconnecting the valve shaft 4 and the valve lid 5, the valve shaft 4 and the valve lid 5 are rotated in the direction opposite to the connection direction. At this time, the engaging portion 13 presses the engaged portion 16 again to bend the male screw portion 11 inward, and the engagement between the engaging portion 13 and the engaged portion 16 is released. After that, the valve shaft 4 and the valve cover 5 can be separated simply by screwing them in the releasing direction.

本発明の弁蓋と弁軸の接続構造においては、雄螺子部側の部材又は雌螺子部側の部材のどちらか一方の側面より他方の側面に向けて係合部を突設し、他方に被係合部を形成している。従って、作業者は係合に伴う触感や音によって螺合が適正に成されたことを判別することができる。又、係合部と被係合部の係合によって、適正に螺合された状態の螺子が緩むことなく、好適な状態を維持することが可能となる。
又、係合部と被係合部の係合箇所は雌螺子部や本体部、被覆部等によって覆われており、外部に露出しない。従って、外部からの応力によって係合が解除されることを防ぐことが可能となるとともに、意匠性が向上する。
In the structure for connecting the valve cover and the valve shaft of the present invention, the engaging portion is provided so as to protrude from one side surface of either the male thread portion side member or the female thread portion side member toward the other side surface, It forms an engaged portion. Accordingly, the operator can determine that the screwing has been properly accomplished by the tactile sensation and sound accompanying the engagement. In addition, by engaging the engaging portion and the engaged portion, it is possible to maintain a suitable state without loosening the properly screwed screw.
Further, the engaging portion between the engaging portion and the engaged portion is covered with the female screw portion, the body portion, the covering portion, etc., and is not exposed to the outside. Therefore, it is possible to prevent the engagement from being released due to external stress, and the design is improved.

本発明は上記実施形態の形状に限られるものではなく、発明の要旨を逸脱しない範囲において種々の形状変更を行っても良いものである。例えば、図１３に示すその他の実施形態のように、係合部１３は弁軸４の先端に嵌着されたＯリングであって、雄螺子部１１や雌螺子部１２とは離間した位置に形成されていても良い。同様に、被係合部１６が雄螺子部１１や雌螺子部１２と離間した位置に形成されても良い。又、上記その他の実施形態において係合部１３はＯリングから成るものであったが、係合部１３や被係合部１６を形成するにあたり、材質について何ら限定されるものではない。
又、上記第一実施形態において、筒状部７は平面視略Ｃ字状であって、被係合部１６としての溝部１７が形成されていたが、溝部１７が被係合部１６を兼ねなくとも良い。即ち、筒状部７の内側面に係合部１３としての突起１４を形成し、雄螺子部１１の一部を切り欠くことによって被係合部１６を構成しても良い。この場合、溝部１７は係合部１３が雄螺子部１１を乗り越える際に、筒状部７が外側に撓ませる効果を奏する。
又、上記第二実施形態は雄螺子部１１に切り欠き状の溝部１７である被係合部１６が形成されているが、上記その他の実施形態のように、雄螺子部１１の螺合開始側端部よりも上方に被係合部１６を構成しても良い。このようにすることで、螺合時において、筒状部７に形成された係合部１３が雄螺子部１１を押圧する前に係合を行うことが可能となることから、軽い力で部材同士を接続することができる。 The present invention is not limited to the shape of the above embodiment, and various shape changes may be made without departing from the scope of the invention. For example, as in another embodiment shown in FIG. 13, the engaging portion 13 is an O-ring fitted to the tip of the valve shaft 4, and is positioned apart from the male thread portion 11 and the female thread portion 12. It may be formed. Similarly, the engaged portion 16 may be formed at a position separated from the male thread portion 11 and the female thread portion 12 . Further, although the engaging portion 13 is made of an O-ring in the above-described and other embodiments, the material for forming the engaging portion 13 and the engaged portion 16 is not limited at all.
In the above-described first embodiment, the cylindrical portion 7 is substantially C-shaped in plan view, and the groove portion 17 is formed as the engaged portion 16 . At least good. That is, the engaged portion 16 may be configured by forming the projection 14 as the engaging portion 13 on the inner surface of the cylindrical portion 7 and cutting out a portion of the male screw portion 11 . In this case, the groove portion 17 has the effect of bending the cylindrical portion 7 outward when the engaging portion 13 rides over the male screw portion 11 .
In addition, in the above-described second embodiment, the engaged portion 16, which is a notch-shaped groove portion 17, is formed in the male screw portion 11. The engaged portion 16 may be configured above the side end portion. By doing so, it is possible to perform engagement before the engaging portion 13 formed in the cylindrical portion 7 presses the male thread portion 11 when screwing together, so that the members can be engaged with a light force. can be connected to each other.

又、上記各実施形態において、弁体の昇降動作は弁体から離間した位置に配設された操作部によって行われるものであるが、弁蓋を直接押動することで昇降動作を行うとともに、弁軸内部に配置されたロック機構によって上記昇降状態を保持する構造の弁体であっても良い。
又、弁蓋側に雄螺子部が形成されており、弁軸側に雌螺子部が形成されていても良い。
又、上記各実施形態において、被係合部はスリット状の溝部であったが、被係合部も係合部側へ向けて突設された突起であっても良い。 In each of the above-described embodiments, the valve body is lifted/lowered by an operation unit disposed at a position spaced apart from the valve body. The valve body may have a structure in which a lock mechanism arranged inside the valve shaft maintains the above-mentioned up-and-down state.
Alternatively, the male threaded portion may be formed on the valve cover side and the female threaded portion may be formed on the valve shaft side.
In each of the above-described embodiments, the engaged portion is a slit-shaped groove, but the engaged portion may also be a projection projecting toward the engaging portion.

Ｂ 槽体
１ 排水口
２ 排水栓
３ 弁体
４ 弁軸
５ 弁蓋
６ 本体部
７ 筒状部
８ 被覆部
９ パッキン
１０ 目皿
１１ 雄螺子部
１２ 雌螺子部
１３ 係合部
１４ 突起
１５ 位置決め部
１６ 被係合部
１７ 溝部 B Tank body 1 Drain port 2 Drain plug 3 Valve body 4 Valve shaft 5 Valve lid 6 Body part 7 Cylindrical part 8 Coating part 9 Packing 10 Perforated plate 11 Male screw part 12 Female screw part 13 Engagement part 14 Projection 15 Positioning part 16 Engaged portion 17 Groove

Claims (4)

螺合による弁蓋と弁軸の接続構造であって、
排水口を閉塞する弁蓋に形成される一方の雄螺子部又は雌螺子部と、
前記弁蓋を支持するとともに前記排水口から取り外し可能な弁軸に形成される前記雄螺子部又は前記雌螺子部が螺合する他方の雄螺子部又は雌螺子部と、
前記雄螺子部又は前記雌螺子部のどちらか一方の側面より他方の側面に向けて突設された係合部を備え、
前記係合部は、前記雄螺子部又は前記雌螺子部の他方に形成された被係合部と係合するとともに、
中央に前記弁軸が挿通可能な開口が形成された部材を前記弁軸に備えることを特徴とする弁蓋と弁軸の接続構造。 A connection structure between a valve cover and a valve shaft by screwing,
one of the male screw portions or the female screw portion formed on the valve cover that closes the drain port;
the other male threaded portion or female threaded portion to which the male threaded portion or the female threaded portion formed on the valve shaft that supports the valve cover and is removable from the drain port is screwed;
An engaging portion projecting from one side surface of the male screw portion or the female screw portion toward the other side surface,
The engaging portion engages with an engaged portion formed on the other of the male screw portion and the female screw portion ,
A connection structure between a valve lid and a valve shaft, wherein the valve shaft is provided with a member having an opening formed in the center through which the valve shaft can be inserted . 前記係合部と前記被係合部は、
適正位置まで螺合が完了した際に係合することを特徴とする請求項１に記載の弁蓋と弁軸の接続構造。 The engaging portion and the engaged portion are
2. A structure for connecting a valve cap and a valve shaft according to claim 1, wherein the valve cover and the valve shaft are connected when they are screwed to a proper position. 前記被係合部は、
前記係合部と係合する溝部であることを特徴とする請求項１又は請求項２に記載の弁蓋と弁軸の接続構造。 The engaged portion is
3. The structure for connecting a valve lid and a valve shaft according to claim 1, wherein the connecting structure is a groove that engages with the engaging portion. 前記係合部は、
前記雄螺子部又は前記雌螺子部の螺合終了側に形成されていることを特徴とする請求項１乃至請求項３のいずれか１つに記載の弁蓋と弁軸の接続構造。 The engaging portion is
4. The connection structure between the valve cover and the valve shaft according to claim 1, wherein the connection structure is formed on the screwing end side of the male screw portion or the female screw portion.
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Publication number Priority date Publication date Assignee Title
JP2000170735A (en) 1998-12-04 2000-06-20 Hitachi Ltd Screw fastening structure and its method
JP3188002B2 (en) 1992-12-28 2001-07-16 積水化学工業株式会社 Pipe fittings
JP2002242254A (en) 2001-02-20 2002-08-28 Techno Tec:Kk Drain trap
WO2017051803A1 (en) 2015-09-24 2017-03-30 日立金属株式会社 Mechanical joint and method for producing same
JP2017129247A (en) 2016-01-22 2017-07-27 日本パワーファスニング株式会社 Fastening device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0428948Y2 (en) * 1987-03-31 1992-07-14
JP4852368B2 (en) * 2006-07-18 2012-01-11 積水化学工業株式会社 Pipe fitting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3188002B2 (en) 1992-12-28 2001-07-16 積水化学工業株式会社 Pipe fittings
JP2000170735A (en) 1998-12-04 2000-06-20 Hitachi Ltd Screw fastening structure and its method
JP2002242254A (en) 2001-02-20 2002-08-28 Techno Tec:Kk Drain trap
WO2017051803A1 (en) 2015-09-24 2017-03-30 日立金属株式会社 Mechanical joint and method for producing same
JP2017129247A (en) 2016-01-22 2017-07-27 日本パワーファスニング株式会社 Fastening device

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